Abstract

The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01 x 10(20) protons on target. In the absence of neutrino oscillations, 205 +/- 17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin(2) (theta(23)) = 0.514 +/- 0.082 and mass splitting vertical bar Delta m(32)(2)vertical bar = 2.44(-0.15)(+0.17) x 10(-3) eV(2)/c(4). Our result corresponds to the maximal oscillation disappearance probability.

Autore Pugliese

• Berardi Vincenzo

Tutti gli autori

• Abe K , Adam J , Aihara H , Akiri T , Andreopoulos C , Aoki S , Ariga A , Ariga T , Assylbekov S , Autiero D , Barbi M , Barker G J , Barr G , Bass M , Batkiewicz M , Bay F , Bentham S W , Berardi V , Berger B E , Berkman S , Bertram I , Bhadra S , Blaszczyk F D M , Blondel A , Bojechko C , Bordoni S , Boyd S B , Brailsford D , Bravar A , Bronner C , Buchanan N , Calland R G , Caravaca Rodriguez J , Cartwright S L , Castillo R , Catanesi M G , Cervera A , Cherdack D , Christodoulou G , Clifton A , Coleman J , Coleman S J , Collazuol G , Connolly K , Cremonesi L , Curioni A , Dabrowska A , Danko I , Das R , Davis S , de Perio P , De Rosa G , Dealtry T , Dennis S R , Densham C , Di Lodovico F , Di Luise S , Drapier O , Duboyski T , Duffy K , Dufour F , Dumarchez J , Dytman S , Dziewiecki M , Emery S , Ereditato A , Escudero L , Finch A J , Frank E , Friend M , Fujii Y , Fukuda Y , Furmanski A P , Galymov V , Gaudin A , Giffin S , Giganti C , Gilje K , Golan T , Gomez-Cadenas J J , Gonin M , Grant N , Gudin D , Hadley D R , Haesler A , Haigh M D , Hamilton P , Hansen D , Hara T , Hartz M , Hasegawa T , Hastings N C , Hayato Y , Hearty C , Helmer R L , Hierholzer M , Hignight J , Hillairet A , Himmel A , Hiraki T , Hirota S , Holeczek J , Horikawa S , Huang K , Ichikawa A K , Ieki K , Ieva M , Ikeda M , Imber J , Insler J , Irvine T J , Ishida T , Ishii T , Ives S J , Iyogi K , Izmaylov A , Jacob A , Jamieson B , Johnson R A , Jo J H , Jonsson P , Joo K K , Jung C K , Kaboth A C , Kajita T , Kakuno H , Kameda J , Kanazawa Y , Karlen D , Karpikov I , Kearns E , Khabibullin M , Khotjantsev A , Kielczewska D , Kikawa T , Kilinski A , Kim J , Kim S B , Kisiel J , Kitching P , Kobayashi T , Kogan G , Kolaceke A , Konaka A , Kormos L L , Korzenev A , Koseki K , Koshio Y , Kreslo I , Kropp W , Kubo H , Kudenko Y , Kumaratunga S , Kurjata R , Kutter T , Lagoda J , Laihem K , Laveder M , Lawe M , Lazos M , Lee K P , Licciardi C , Lim I T , Lindner T , Lister C , Litchfield R P , Longhin A , Lopez G D , Ludovici L , Macaire M , Magaletti L , Mahn K , Malek M , Manly S , Marino A D , Marteau J , Martin J F , Maruyama T , Marzec J , Masliah P , Mathie E L , Matveev V , Mavrokoridis K , Mazzucato E , McCarthy M , McCauley N , McFarland K S , McGrew C , Metelko C , Mijakowski P , Miller C A , Minamino A , Mineev O , Mine S , Missert A , Miura M , Monfregola L , Moriyama S , Mueller Th A , Murakami A , Murdoch M , Murphy S , Myslik J , Nagasaki T , Nakadaira T , Nakahata M , Nakai T , Nakamura K , Nakayama S , Nakaya T , Nakayoshi K , Naples D , Nielsen C , Nirkko M , Nishikawa K , Nishimura Y , O'Keeffe H M , Ohta R , Okumura K , Okusawa T , Oryszczak W , Oser S M , Otani M , Owen R A , Oyama Y , Pac M Y , Palladino V , Paolone V , Payne D , Pearce G F , Perevozchikov O , Perkin J D , Petrov Y , Pinzon Guerra E S , Pistillo C , Plonski P , Poplawska E , Popov B , Posiadala M , Poutissou J -M , Poutissou R , Przewlocki P , Quilain B , Radicioni E , Ratoff P N , Ravonel M , Rayner M A M , Redij A , Reeves M , Reinherz-Aronis E , Retiere F , Robert A , Rodrigues P A , Rondio E , Roth S , Rubbia A , Ruterbories D , Sacco R , Sakashita K , Sanchez F , Sato F , Scantamburlo E , Scholberg K , Schwehr J , Scott M , Seiya Y , Sekiguchi T , Sekiya H , Sgalaberna D , Shiozawa M , Short S , Shustrov Y , Sinclair P , Smith B , Smith R J , Smy M , Sobczyk J T , Sobel H , Sorel M , Southwell L , Stamoulis P , Steinmann J , Still B , Suda Y , Suzuki A , Suzuki K , Suzuki S Y , Suzuki Y , Szeglowski T , Tacik R , Tada M , Takahashi S , Takeda A , Takeuchi Y , Tanaka H K , Tanaka H A , Tanaka M M , Taylor I J , Terhorst D , Terri R , Thompson L F , Thorley A , Tobayama S , Toki W , Tomura T , Totsuka Y , Touramanis C , Tsukamoto T , Tzanov M , Uchida Y , Ueno K , Vacheret A , Vagins M , Vasseur G , Wachala T , Waldron A V , Walter C W , Wark D , Wascko M O , Weber A , Wendell R , Wilkes R J , Wilking M J , Wilkinson C , Williamson Z , Wilson J R , Wilson R J , Wongjirad T , Yamada Y , Yamamoto K , Yanagisawa C , Yen S , Yershov N , Yokoyama M , Yuan T , Zalewska A , Zalipska J , Zambelli L , Zaremba K , Ziembicki M , Zimmerman E D , Zito M , Muda J Z

Titolo volume/Rivista

PHYSICAL REVIEW LETTERS

Anno di pubblicazione

2013

ISSN

0031-9007

ISBN

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Numero di citazioni Wos

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